<p>
  <a href="http://example.com">This</a> <i>should</i> be santized.
  <script src="http://evil.com"></script>
</p>
<p>
  Compare this output with the <a href="http://appengine-html-whitelist.googlecode.com/svn/trunk/examples/dirty.html">original file</a>.
</p>
